We have received many requests about the source for our assertion that most mass murders have occurred in otherwise “gun free” zones.

Based on data from the SEALE study, an analysis by TDI, and our own painstaking research, we are able to say definitively that most “active killer” shootings have occurred in so-called “gun free” zones. The experts who say they may be “invitations” are also John Benner and Ron Borsch who have six decades of law enforcement experience and training between them.